Improvement in devices for holding bits in their sockets



UNITED vSTATES PATENT OFFICE.

C. F. HUNTER, OF ADRIAN, MICHIGAN.

IMPROVEMENT IN DEVICES FOR HOLDING BITSIN THEIR SOCKETS.

Specification forming part. of Letters Patent No. 40,412, dated October 27, 1863.

T0 @ZZ whom it may concern.-

Beit known that I, U. F. HUNTER, of Adrian, in the county of Lenawee and State of Michigan, lhave invented anew and useful Improvement in that class of tools used for holding boring-tools, and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specication, of which- Figure l ofthe accompanying drawings is a perspective view exhibiting its several partsviz: Socket A, dog B, slot E, ring D, and bit K. Fig.2 exhibits an internal View of the same for the purpose of showing parts that cannot be seen in Fig. l-viz: Setscrew I, catch F, tapering hole J, notch L, and inclined planes G and H.

I will describe the construction and operation of my socket, as follows: The socket A has a square tapering hole(marked J) in its center, and a slot E in its side, in which the dog B is fitted, with a cylindrical ring, D, surrounding the whole, said ring being freeto slide back and forth. on the socket A. The dog B has a catch, F, with its inclined planes G and H. Thevset-screw I is to regulate the motion of dog B; When a person Wishes to v insert a bit in the socket he slides the ring D up to the position of the set-screw I, (seen in Fig. 2,) which in turn depresses the upper end ofdog-B until it strikes setscrew I, which raises the lower end of dog B sufficient to allow the bit K to be inserted in the hole J, past the catch F. Then, when the bit K has been inserted into the socket, he slides the ring D from the position of the set-screw I to its position seenv in Figs. 1 a-nd 2, which presses catch F into the notch L. (Seen in bit K.) The inclined planes G and H at the sanne time draw bit K tight up into the hole J.

After having described my invention, what I claim, and desire to secure by Letters Patent,

A socket forholdin g boringtools, constructed to operate with a sliding ring working in copibination with a dog, as described,said dog having inclined planes, as above described and set forth. y

C. F. HUNTER. Witnesses:

FRANCES SMITH, DANIEL C. SMITH. 

